Machine for making asphaltic or other mixtures.



N. M. ROSENDAHL.

MACHINE FOR MAKING ASPHALTIC OR OTHER MIXTURES.

Arrucmou FILED JAN.22. 1913.

1,206,918. Patented Dec. 5,1916.

7 SHEETS-SHEET 1.

N. M. ROSENDAIIL.

MACHINE FOR MAKING ASPHALTIC OR OTHER MIXTURES.

APPLICATION FILED IAN.-22. I9I3.

1,206,918. Natented Dec. 5,1916.

7SHEETS-SHEET 2.

Patented Dec. 5,1916.

7 SHEETSSHEET 3.

QM Q INN &

ma i

N. M. ROSiNDAHL. MACHINE FOR MAKING ASPHALTIC OR OTHER MlXTURES.

APPLICATION FlLED JAN. 22,1913- N. M. ROSENDAHL.

MACHINE FOR MAKING ASPHALTIC on OTHER MIXTURES.

APPLICATION FILED JAN. 22, 19l3. 1,206,918. Patented Dec. 5,1916.

7SHEETSSHEET 4.

N. M. ROSENDAHL.

MACHINE FOR MAKING ASPHALTIC OR OTHER MIXTURES.

APPLICATION FILED JAN.22. 1913.

1 206,91 8. Patented Dec. 5,1916.

7$HEETSSHEET 5.

N. M. ROSENDAHL.

MACHINE FOR MAKING ASPHALTIC OR OTHER MIXTURES.

Patented Dec. 5,1916.

7SHEETS-SHEET 6 m WW N. M. ROSENDAHL.

MACHINE FOR MAKING ASPHALTIC OR OTHER MIXTURES.

APPLICATION FILED JAN. 22. l9l3- Patented Dec. 5, 1916.

ISHEETSSHEET 7.

J M ML U ITE STATES PATENT orrrcn runs 1a. BOSENDAI-IL, or CHICAGO, ILLINOIS, ASSIGNOB To FREDERICK c. AUSTIN, or

. CHICAGO, ILLINOIS.

MACHINE FOR MAKING ASPHALTIG OR OTHER MIXTURES.

Specification of Letters Patent.

Application filed January 22, 1913., Serial No. 743,430.

To all whom it may concern: 1

Be it known that'l, NILs M. RosENDAHL, a citizen ofthe United States of America, and

resident of Chicago, Cook county, Illinois,

have invented a certain new and useful Imp'rovement in Machines for Making Asphaltic or otherMixtures, of which the following is a specification.

My invention relates to machinery for heating and mixing the crushed rock or stone, sand and asphalt from which mixtures are made for various purposes,.as for or other adhesive binder, and when the different materials. are combined in certain proportions. Again, it is necessary to keep the supply of asphaltor other similar material hot, and it is also-necessary to again heat the materials while they are being mixed.

Generally stated, the object of my invention is to provide a novel and highly eflicient machine, of a unitary character, for separating or gradin the crushed rock or stone and sand, heating the same, proportioning the different materials preparatory to coinhining them, and then mixing the crushed rock or stone and'sand with hot asphalt, or other similar material, whereby the necessary steps or operations are all cornhined in one unitary machine, thus greatly facilitating the work of putting down a paving of this kind, or of utilizing the mixture for any other purpose.

Special objects-are to provide nov el and eficient means for simultaneously separating the sand from the coarser materials, such as crushed rock or stone, and heating the same as they travelforward; to provide novel and efficient means for "heating the supply of asphalt or other adhesive hinder at the same time that the. crushed rock or other materials are heing'separated and heated; to providea novel and efiicientarrangement for measuring ofi predetermined quantities of the various materials, prepara-' tory to combimng the same, the proportionmg being according to weight, and whereby the difierent quantities may then be simultaneously discharged into the mixing receptacle; to provide a novel andefficient arrangement whereby the weighing apparatus I serves automatically to control the conveying'mechanismby which the materials are delivered thereto, exceptthe asphalt or other adhesive binder, and whereby the delivery of said material's is discontinued as soon as the predetermined quantities thereof have accumulated in the diiferent receptacles with which the weighing apparatus is provided for this purpose; to provides. novel and efiicient construction whereby the elements Patented Dec. 5, 1916.

of the machine are all combined and asso- I elated together on a single body or platform,

and arranged in combination with a power plant of suitable character, whe'reloy pram tically everything necessary for carrying on the work of preparing and mixing the materials is embodied iii-one unitary machine; and to provide certain details and features oi improvement and combinations tending to increase the general eliiciency and servicealoihty oi a machine for preparing and mixing materials of this" particular character.

To the foregoing and other useful ends,

my invention consists in matters hereinaiter i the other end portion of the said machine,

this end of the machine including the apoaratns for conveying the sand and rock and asphalt to an elevated posi andlwelghingmechanism for then receiving the diiierent materials, and proportioning the same, according to weight, the machine at this end being also provided with a sim.-'

able power plant for operating the varicais instrumentalities of which the unitary machine thus provided is composed. Fig. 3 is a longitudinal section of the portion of the machine shown in Fig. 1. .Fig. i is a longitudinal section of that portion of the machine shown in Fig. 2. Fi 5 is a horizontal section on line 5+5 in Fig. 4. Fig. 6 is a horizontal section on line 6-6- in Fig. 3. Fig. Tis a fragmentary view showing the gate by which the mixture-is discharged from the mixing receptacle. Fig. 8 is a cross section on line 88 in Fig. 3.

' aphasia As thus illustrated, and referring to Figs. 3 and 8, the means for preparing the materials, preliminary to miringthe same to gether, are as followsi The feeding device A comprises a hopper or; provided with a discharge spout u projecting within the per, and then into the said spout. From the sa'idspout the materials are delivered I chine. The said inner shell Z1 is provided fit) to a'rotary drum C comprising inner and outer shells b and b the inner shell being perforated to'serve as a screen, and having imperforate end portions 5 which rest upon wheels or 'rollers 6 which latter are suitably mounted within the body C of the niawith longitudinal'rib's 6 having feed blades 6 whereby thematerials are gradually fed forward within-the drum,'it being observed that these blades are arranged obliquely relative to the said ribs, The two shells are spaced-a distance apart, the outer shell being imperforate throughout the length thereof, and the said space'between the two I shells being provided With feed blades b,

whereby the sand and other fine particles which pass through the perforations ofthe inner shell are gradually fed forward. A

'- stationary spout 6 receives the relatively coarse materials, such as crushed rock or" stone, from the delivery end of the-drum, the said inner shell being provided with lifting blades 6" forthis purpose, said'blades carrying the materials upward and dropping them into said. spout. Another spout b receives the sand and relatively fine materials from the end of the outer shell. The tank D overlies the rotary drum, and ex tends at each side thereof, serving as a sort of housing therefor, space being providedbetween the drum and the inner'surface of said tank. The top of the tank is provided with covers or doors (Z, which, when opened, permit of the introductionc-f asphalt or other similar materials into the tank. The end of the tank is provided with pipe connections d at the bottom thereof, which connections are joined to the feed pipe d by which. the hot asphalt is delivered to the vother-end o f the machine, as'will hereinafter more fully appear. A; plurality of burners E, of any suitable character, are disposed in the receptacles; 6 below the rotary drum, whereby the contents of the said drum are heated while the relatively coarse materials are being separated from the relatively fine materials. At the sametime the heat and products of combustion circulate around and above the rotary drum in contact with the inner surface of the tank D, whereby the contents ofsaid. tank is heated in the required manner. These burners, as shown, I are each constructed from a hollow tile 6 I ertending transversely of the machine, said t1le having its side walls provided with openings e for the escape of the heat and products of combustion, and its top wall provided with-openings e for the same purpose. A gas or oil burner etis provided at I ers by pipes 0 laid across the tops of the tiles E, whereby the steam is superheated before entering the burners to force the oil or otherfuel therefrom. In this way the,

materials are properly separated from each other, and at the same time thoroughly heated while progressing to the other end of the machine.

" The means for proportioning the differcut-materials by weight, and mixing the same together, While subjectto further heat,

' are as follows: The upright body F is provided at the side thereof facing toward the rotary drum with elevators f and f each involving an endless chain and bucket device, the lower end of the elevator f receiving the materials from the spout b, and the lower end of the elevator f receiving the materials from the spout 5 whereby these materials are carried upward and discharged respectivcly into the spouts f and A rotary receptacle G is mounted on the tilting bail' g, which latter has its end portions fulcrumed or pivoted on. the body of the machine, in the manner shown more clearly in Fig. 4:. A similar but smaller receptacle H is mounted to rotate on the bail h, and a still smaller receptacle T is mounted. to rotate on the bail 75, these bails being similar to the bail 9, except that they are of diderent sizes. These rotary receptacles are all open at their tops, and as they are all controlled and operated in the same manner, a description of one Will be suilicient for all of them. I

Referring, therefore, to Fig. 4, it will be seen that the receptacle H is provided at its end with a grooved disk k for a belt 71. which belt travels over a sheave it and then ion .llt

downward to the sheave it on the shaft it,

this shaft being provided with a crank it for the operation thereof. By this arrangement, and it being understood that each receptacle is provided with. a belt connection of this character, the three receptacles can having a weight or counter-balanced at the lower end thereof. The weights or counter-balances of the different receptacles are adjusted to keep the receptacles normally elevated, but when filled each-receptacle" raises its allotted weight or balance. The elevators, are operated by a shaft J "at the upper ends thereof, and each elevator is provided with a clutch of any suitable character (not shown) arranged on the said shaft. The arm h on the top of the walking beam 71. is connected by a rod h" with the clutch controlling the elevator f whereby 'the downward movementof the receptacle H stops the running of the elevator f thereby, discontinuing the a delivery of materials to said receptacle. A similar arrangement is provided for controlling the clutch of the in turn with the pipe (I previously described. Any suitable arrangement may be employed for controlling the flow of asphalt through this connection, and when the receptacle I is filled, it moves downward like the other receptacles; As soon as this receptacle for weighing the asphalt moves downward, the operator or attendant then stops the flow of hot asphalt through the pipe connection, and thethree receptacles are then ready to be turned over by operating the crank it, in a manner which will be readily understood. The three weighing receptacles can stand for some time with their contents undischarged, but when all is ready, the operator or attendant will rotate the shaft h to dump the contents of said receptacles into the mixing tank or receptacle K, which latter is arranged direct y below the said weighing receptacles. This mixing device comprises a pair of horizontal and transversely disposed shafts k, arranged at the bottom of the receptacle K, and each provided with agitating and feeding blades which blades have their outer edges disposed parallel with the shafts, but the inner portions of said blades being twisted around at an angle to feed the materials forward. In this way, the outer ends of the blades lift the materials upward, and as the materials then slide downward on each blade, toward the shaft, the twisted portion of the blade tends to force the materials forward in a direction parallel with the shafts. For this purpose the tank or receptacle K is provided with parallel trough-shaped portions in which the feeding blades rotate, and in which the materials are mixed and then fed toward the discharge end of the mixing tank or receptacle.

"To discharge .the 'materials, after being.

properly mixed, the gate 70 shown in Fig. is raised by the hand lever 70 thus allowing the mixture to escape. The burner L, similar to those pieviously described, is disposed directly. whereby thematerials are subjected to heat while being mixed. Thus, it will be seen thatthe crushed rock or stone or other similar. comminut'ed materials are fed together, with the coarse mixed with the fine, and during the separation of the relatively fine materials from the relatively coarse mate-' rials, the same are properly heated. At the same time, and during this separation of the previously intermingled materials, the supply of asphalt or similar adhesive binder is heated to the required temperature, the body of asphalt or like material overlying as the means for separating or grading the other materials, and thus economically utilizin the heat which would otherwise be wast The materials thus graded and heated and properly prepared are then separately proportioned by weighing mechanism for this purpose, of the kind shown and described, whereby the proper or desired quantities are accumulated preparatory to mixing them together. As soon as the three weighing receptacles are filled with the different materials, thus determining the correct proportions thereof, the contents of each weighing receptacle is dumped into the mixing device, and the materials are here further subjected to heat while being agitated and mixed together. I This is all accomplished, it will be seen, in a machine of a unitary and self-contained character, whereby the different steps necessary to the preparationof the materials for putting down paving, or other similar work, are all combined in one and the same "machine, thus greatly facilitating work of this kind.

The feeding device A and the rotary drum B, together with the elevators f and i the shafts is and the pump i must all be driven or operated in some suitable manner, and for this purpose a power plant consisting of a boiler M and steam engine N is provided at the end of the machine, it being understood that all of these different instrumentalities, heretofore described, are mounted upon a platform or body 0, and associated together in operativerelation to each other. A longitudinally disposed shaft P. is arranged at one side of the machine, and suitably connected by gearing p with thesaid engine. The other end of said shaft is provided with a pinion p that engages the idle gear 9 which latter in turn engages the cog ring p on the end of the rotary drum. This end of the ,shaft P is also con.- nected by a bevel gearing p, with the shaft a of the feeding device. In this way both the rotary drum and the feeding mechanism low the mixing device,

are driven by the seitt ieegiuudieeiiy eiisposed shett, met pmmemiy by the engine The s'siet engine is else eeeee te-ei'jwitii the" eievetet siisit J, by means ineiuting tie'tt Q, whereby the tits elevators see suite-piety ep ei'eted. The shafts it me eemieeteii bye gearing it, end else 0t said is pro with eel-t puiiey e, eeeeeeteei by e heit r with it simi't e driven by the engine. Thus the miiiieg device is eise deivem by the said! engine, it being imtieisteeet that suitstiie eiutehes st ether means (net shewn) mey be tii' Urent gs Wei? tiensmi eeiiiiee tieiis, The i tizriveii by any suitebie eennee ien t0 thefseiei engine, e0: eiieci in any suitebie memie'iz em the feregeileg it Wiii be'seen by iiiventieii previrie e ueitezey and i igiiiy eiiieient machine for v7 erwise preparing" eiiiifeifent kinds V- me if mew them i these,

A 311311 e dump ng; e1: tee

device es te i" mte mlXL U mete thereof, 4 i'eii .eis, eppeietus m seiei "ee eiiei eeetse t termineei seiei meeiis the 3273M? teii, Q the purpos espieyeii fee msimeiiy eeetifeiiingp w -n u t sect comes met-semis,

tiveiy time 'peetiens of said meterieis teem reistiveiy coarse peitiens theireef, meet:

emism {for prepertiening said reistiveiy e end 'eesese metei'isis, apparatus 501 de- Iliveri the materials teem ssici iiistmimem teiit es te said mechanism, esns fee thee the said fineemi eeei'se tiie pi'epertiee tieteimineti by mesa. iiism, end eenteeiiefi. 'by 'seitt mesh ism fer eutemstieeiiy stepping a eeretes,

A me'ehieeieiithe per gee eemprisiiig meens for feeding instrumenteiities :ter isepe1etiiig tiveiy time pertieiis eff meterieis the i eietiveiy eeeise pei-tieiis they ILWS kin m uh,

meehsiiisiis,

, ieenti coarse eii tietei'iiii 1 pertiens s is ieietivetj] C@2.1S6 pertiei peeeeitieniieg t *ei'ieis item irest tiveiy pertiees e? the ieietweiy eeerse ee. d ens eil emsm. tee PEGPUILMOIZH tiie iivei'ing time meteiieis item te said meehenism, fez mixing the said, time smi eeetse materials i the pi'epertien determined by mechaeism, means tee heating the instmmei teiities, to heat the metefisis White being separated, and mesns for the mete rials While being mixet'i.

i. A machine, fer the purpese set teeth, eempi'isieg means to? feeding the sieterieis, instiumenteiities for sepereting the mietiveiy time portions of said meterieis from n evict" the relatively coarse portions thereof, mechanism for pr'oportioning the said relatively fine and coarse materials, apparatus for delivering the materials from said instrumentalities to said mechanism, means for then mixing the said fine and coarse materials in the proportion determined by .said mechanism, means for heating asphalt or the like, means for measuring off predetermined quantities of the hot asphalt, and means for causing the proportioned quantities of fine and coarse materials and asphalt to be dumped together into said mixing means.

8. A machine for the purpose set forth, comprising means for feeding the material's, instrumentalities for separating the relatively fine portions of said materials from the relatively coarse portions thereof, mechanism for proportioning the said relatively fine and coarse materials, apparatus for delivering the materials from said instrumentalities to said mechanism, means for then mixing the said fine and coarse materials in the proportion determined by said mechanism, the said mechanism having means for automatically stopping the supply of materials thereto, and a manually controlled means for supplying predetermined quantities of asphalt or the like to the said mixing means.

9. A machine for the purpose set forth, comprising means for preparing the materials, mechanism for separately weighing the different materials, apparatus for feed ing the materials from said means to said mechanism, and a mixing device disposed in position to receive the predetermined quantities from said mechanism, and means whereby the said apparatus is automatically stopped by said mechanism.

10. A machine for the purpose set forth, comprising means for preparing the materials, mechanism for separately Weighing the different materials, apparatus for feeding the materials from said means to said mechanism, a mixing device disposed in position to receive the predetermined quantities from said mechanism, said mechanism comprising a plurality of receptacles mounted to gravitate independently of each other, and means for upsetting the said receptacles in unison.

11. A machine for the purpose set forth, comprising means for preparing the materials, mechanism for separately Weighing the different materials, apparatus for feeding the materials from said means to said mechanism, a mixing device disposed in position to receive the predetermined quantities from said mechanism, said mechanism comprising a plurality of rotary receptacles, means whereby the receptacles are bodily movable, a shaft, connection from said shaft to said receptacles, and means for operating said shaft to rotate the receptacle. Signed by me at Chicago, Cook county, Illinois, this 18th day of January, 1913.

NILS M. ROSENDAHL.

Witnesses H. KNUnsoN, J. NORBY. 

